tsarnaev was read his miranda rights and nodded yet. the only word he spoke other than that was no when asked if he can afford a lawyer. congress will be briefed today. the complaint says when the first bomb went off every head turned towards the explosion except for tsarnaev. he walks away without his nap sack. tsarnaev told investigators he and his brother acted alone prompted by their religion and learned how to make bombs on the internet. one friend of the brother says they are shocked they are suspects. >> they never showed signs of any violence or wanting to harm people. they were great members of our society. i remember a great friendly giant. he cared for people. more on the reserved side. they respected life at one point and i don't know what happened. >> joining me from boston is michael tracking the new leads and joining the fvgz former white house counter terrorism official, an nbc analyst. it is good to have you here. i think you can hear what the mom is saying and also what friends are saying. i want to start with you beca